The helium atom in a magnetic field by the Lagrange-mesh method

2005 ◽  
Author(s):  
M. Hesse
Keyword(s):  
Magnetic Field ◽  
Helium Atom ◽  
Mesh Method

Zero-Field Level Crossing in the Helium Atom

1972 ◽  
Vol 50 (2) ◽  
pp. 116-118 ◽  
Author(s):  
C. W. T. Chien ◽  
R. E. Bardsley ◽  
F. W. Dalby
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Helium Atom ◽  
Cross Sections ◽  
Zero Field ◽  
Level Crossing ◽  
Field Level ◽  
Collision Cross Sections ◽  
The Magnetic Field

Zero-field level-crossing techniques have been used to measure some upper-state lifetimes of the helium atom. The half-widths of curves obtained by plotting the polarization against the magnetic field strength for the n1D–21D transitions yielded lifetimes of 2.03 × 10−8 s for the 31D state, 3.36 × 10−8 s for the 41D state, and 7.44 × 10−8 s for the 51D state. Collision cross sections for these 1D levels were also determined.

scholarly journals The helium atom in a strong magnetic field

1999 ◽  
Vol 32 (6) ◽  
pp. 1557-1584 ◽  
Author(s):  
W Becken ◽  
P Schmelcher ◽  
F K Diakonos
Keyword(s):  
Magnetic Field ◽  
Strong Magnetic Field ◽  
Helium Atom
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